Kul’dur Nature Park is in the northwest part of the Jewish Autonomous Oblast on the southern slope of the Lesser Khingan range, with mountains and hills ranging in elevation from 280 to 1001 m.

The territory includes the upper Kuldur River basin down to its confluence with the Karadub and Karagai Rivers. The town of Kuldur is within the park’s boundaries, five resort complexes, a metal beam factory and a railway station, Brusit. The park covers 36,700 hectares, of which 35,300 are covered by forest. Wetlands and marshes cover less than 3% of the territory.

The vegetation is characterized by a diversity of communities: dark coniferous forests, larch forests with dwarf Arctic birch (Betula nana) and shrubs, spruce/fir forests with Korean pine, Korean pine/broadleaf forests in the south, birch/aspen communities, willows and alder, and also grassy meadows and mossy swamps. In the vicinity of the town of Kuldur one finds the border between the boreal and East Asian biomes, and associated high species diversity: Japanese yam (Dioscorea japonica), iris, Daurian lily (Lilium dahuricum), Siberian ginseng (Eleutheroccus senticosus), shrubby cinquefoil (Potentilla fruticosa) and twenty more Red
Book species.